3 dnl m4 macros for PowerPC assembler (32 and 64 bit).
5 dnl Copyright 2000, 2002, 2003 Free Software Foundation, Inc.
7 dnl This file is part of the GNU MP Library.
9 dnl The GNU MP Library is free software; you can redistribute it and/or
10 dnl modify it under the terms of the GNU Lesser General Public License as
11 dnl published by the Free Software Foundation; either version 3 of the
12 dnl License, or (at your option) any later version.
14 dnl The GNU MP Library is distributed in the hope that it will be useful,
15 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
16 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 dnl Lesser General Public License for more details.
19 dnl You should have received a copy of the GNU Lesser General Public License
20 dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
23 dnl Called: PROLOGUE_cpu(GSYM_PREFIX`'foo)
25 dnl This is the same as the default in mpn/asm-defs.m4, but with ALIGN(4)
28 dnl 4-byte alignment is normally enough, certainly it's what gcc gives. We
29 dnl don't want bigger alignment within PROLOGUE since it can introduce
30 dnl padding into multiple-entrypoint routines, and with gas such padding is
31 dnl zero words, which are not valid instructions.
33 define(`PROLOGUE_cpu',
42 dnl Usage: r0 ... r31, cr0 ... cr7
44 dnl Registers names, either left as "r0" etc or mapped to plain 0 etc,
45 dnl according to the result of the GMP_ASM_POWERPC_REGISTERS configure
48 ifelse(WANT_R_REGISTERS,no,`
49 forloop(i,0,31,`deflit(`r'i,i)')
50 forloop(i,0,31,`deflit(`v'i,i)')
51 forloop(i,0,31,`deflit(`f'i,i)')
52 forloop(i,0,7, `deflit(`cr'i,i)')
56 dnl Usage: ASSERT(cond,instructions)
58 dnl If WANT_ASSERT is 1, output the given instructions and expect the given
59 dnl flags condition to then be satisfied. For example,
61 dnl ASSERT(eq, `cmpwi r6, 123')
63 dnl The instructions can be omitted to just assert a flags condition with
64 dnl no extra calculation. For example,
68 dnl The condition can be omitted to just output the given instructions when
69 dnl assertion checking is wanted. For example,
71 dnl ASSERT(, `mr r11, r0')
73 dnl Using a zero word for an illegal instruction is probably not ideal,
74 dnl since it marks the beginning of a traceback table in the 64-bit ABI.
75 dnl But assertions are only for development, so it doesn't matter too much.
78 m4_assert_numargs_range(1,2)
79 m4_assert_defined(`WANT_ASSERT')
80 `ifelse(WANT_ASSERT,1,
84 ` b$1 L(ASSERT_ok`'ASSERT_counter)
85 W32 0 C assertion failed
86 L(ASSERT_ok`'ASSERT_counter):
87 define(`ASSERT_counter',incr(ASSERT_counter))
90 define(ASSERT_counter,1)